<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7; IE=EmulateIE9">
    <title>callbacks</title>
    <!--[if IE]>
    <script type="text/javascript" src="../excanvas.js"></script>
    <![endif]-->
    <!--
    For production (minified) code, use:
    <script type="text/javascript" src="dygraph-combined.js"></script>
    -->
    <script type="text/javascript" src="../dygraph-dev.js"></script>

    <script type="text/javascript" src="data.js"></script>
    <style type="text/css">
      #div_g {
        position: absolute;
        left: 200px;
        top: 100px;
      }
      #status {
        position: absolute;
        top: 400px;
      }
    </style>
  </head>
  <body>
    <p>Hover, click and zoom to test the callbacks:</p>
    <div id="div_g" style="width:600px; height:300px;"></div>

    <input type="button" value="Clear list" onclick="javascript:document.getElementById('status').innerHTML=''" />
    <input type="checkbox" id="highlight" checked><label for="highlight"> Show 'highlight' events</label>
    <input type="checkbox" id="unhighlight" checked><label for="unhighlight">Show 'unhighlight' events</label>
    <input type="checkbox" id="showLabels" checked
    onclick='g.updateOptions({showLabelsOnHighlight: this.checked});'>
    <label for="showLabels"> Show Labels on highlight</label>
    <div id="status" style="width:100%; height:200px;"></div>

    <script type="text/javascript">
      s = document.getElementById("status");
      g = null;
      pts_info = function(e, x, pts, row) {
        var str = "(" + x + ") ";
        for (var i = 0; i < pts.length; i++) {
          var p = pts[i];
          if (i) str += ", ";
          str += p.name + ": " + p.yval;
        }

        var x = e.offsetX;
        var y = e.offsetY;
        var dataXY = g.toDataCoords(x, y);
        str += ", (" + x + ", " + y + ")";
        str += " -> (" + dataXY[0] + ", " + dataXY[1] + ")";
        str += ", row #"+row;

        return str;
      };

      g = new Dygraph(
            document.getElementById("div_g"),
            NoisyData, {
              rollPeriod: 7,
              showRoller: true,
              errorBars: true,

              highlightCallback: function(e, x, pts, row) {
                if (document.getElementById('highlight').checked) {
                  s.innerHTML += "<b>Highlight</b> " + pts_info(e,x,pts,row) + "<br/>";
                }
              },

              unhighlightCallback: function(e) {
                if (document.getElementById('unhighlight').checked) {
                  s.innerHTML += "<b>Unhighlight</b><br/>";
                }
              },

              clickCallback: function(e, x, pts) {
                s.innerHTML += "<b>Click</b> " + pts_info(e,x,pts) + "<br/>";
              },

              pointClickCallback: function(e, p) {
                s.innerHTML += "<b>Point Click</b> " + p.name + ": " + p.x + "<br/>";
              },

              zoomCallback: function(minX, maxX, yRanges) {
                s.innerHTML += "<b>Zoom</b> [" + minX + ", " + maxX + ", [" + yRanges + "]]<br/>";
              },

              drawCallback: function(g) {
                s.innerHTML += "<b>Draw</b> [" + g.xAxisRange() + "]<br/>";
              }
            }
          );
    </script>
  </body>
</html>
